Scam maxis rewards points

Almost scam receive sms from maxis say got reward points to redeem item. One redeem the item. Need pay some small money use credit card. After that receive tac approval very weird. Amount not show ringgit Malaysia show other country money. On the spot reject it. After reject show up again. Reject again and call bank say I'm be scam and bank block the credit card. Lucky not happen bad thing. Hope everyone beware this small